.ThermalSeparation.FilmModel.StructuredPackedColumn.EnhancementMS.MassTransferCoeffVap .ThermalSeparation.FilmModel.StructuredPackedColumn.EnhancementMS.MassTransferCoeffVapmodel MassTransferCoeffVap = ThermalSeparation.HeatAndMassTransfer.StructuredPackedColumn.Vapour.RochaStructured;